Try the demos from Ulead.com and I really like Sony Vegas (there's a demo for that too.) For some simple does fine which would be DVDSANTA (yes, free demo too.)
I'd like recommendations as to software to be used to perform the subject. Long ago I installed Nero Ultra 6 and kept it current by downloading the latest updates. It serve my purposes in handling CD's. Now, using a brand new camcorder, I am generating AVI files from tape into Hard Drives. Nero does not provide a way to burn DVD's from those AVI files (they claim a different Nero authoring package is required). Any other alternatives?